Home / 127,736.30-176,281.56-71,147.72

Finding the Fourth Proportional to 127,736.30, 176,281.56 and 71,147.72

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Solution

The fourth proportional to 127,736.30, 176,281.56 and 71,147.72 is: 98,186.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,736.30 : 176,281.56 = 71,147.72 : x
  2. Step 2: Convert to fraction form
    127,736.30/176,281.56 = 71,147.72/x
  3. Step 3: Cross multiply
    127,736.30x = 176,281.56 × 71,147.72
  4. Step 4: Simplify right side
    127,736.30x = 12,542,031,072.04
  5. Step 5: Solve for x
    x = 12,542,031,072.04/127,736.30
  6. Step 6: Final answer
    x = 98,186.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.